Electric water heater



Feb. `23 1926. I

SAMUEL 2 NES/wmf Patented Feb. 23, 1926.

UNITED sraiit:

Partnr orFicE.

SAMUEL D. NESMITH, OF SAN DEGG, CALFEN, ASbIGrNOR, BY DIRECT AND MESNE ASSGNMENTS, OE THIRTY DEF.. CENT TQ A. S. BRIDGES, IEVE CENT TO J. 13. OSBORN, FIVE CENT TO (MRS.) KAT? J. H. BULMER, 'reiterar-:eraan SAN DrEGO, Caumartin; rwe r YN OSORN, FVE EEB. CENT TO EL CENT TG (51H5.) VARY E. NESMITH, ALL OF JF CENT EO i CALLAEEAN, 0F GUADALAJARA,

MEXICO; TEN PER CENT T0 BOG-E2, VJELLES .AND TEN PER CENT TO R. RL RICHARD- SON.

ELECTRC VIATER HEATER.

To all 'whom t may concern.'

Be it known that l, SAMUEL D. Nnsirrrri, a citizen of the United States, residing at San Diego, in the county of San Diego and State of California, have invented a certain new and useful Electric lVater Heater, of which the following is a specification.

My invention relates to electric water heaters, .and the Objects of my invention are: first, to provide a heater of this class which is provided with a plurality f flat, vertical, water conducting channels positioned side by side and parallel to each other, which are heated by means of electric heating elements positioned lcontiguous to and between the adjacent water conducting channels and insulated therefrom and provided wit-h water conductors communicating with the lower and upper ends of all of said water conducting channels, whereby a large volume of water will pass through said channels and be quickly heated therein; second, to provide a heater of this class in which the water resistance is reduced to a minimum and in which a large continuous uninterrupted `flow of water passes through said heater and is rapidly heated in its passage therethrough; third, to provide tubes for a heater of this class, the combined thickness of the separate walls of which `is approximately equal that of the volume of water passing therethrough; fourth, to provide a substantially instan ta-neous electric water heater of large proportionate volume and highly etlicient; ftli, to provide a water heater of this class in which the water flows into the heater in a horizontal Achannel in the lower side thereof and quickly passes through a plurality of flat water conducting channels to the upper side, where it communicates with a similar connecting` channel, from where it is conducted for service; sixth, to provide a water heater of this class in which the water conducting channels are thoroughly insulated from the electric heating elements, thus insuring against the electric currentcoming in 'contact with the water; seventh, to provide -a novelly constructed water Serial No. 691,953.

heater of this class, and eighth, to provide an electric water heater which is very simple and economical of con/struction, durable, eilicient, voluminous in flow, and. which will not readily deteriorate or get out of order. I

i*vl/'ith these and other objects in view, as will appear hereinafter, my invention con sists of certain novel features of construction, combination and arrangement of parts and portions, as will be hereinafter de scribed in det-ail and particularly set forth in the appended claims, reference being had to the accompanying drawings and to the characters of reference thereon, which form a part of this application, in Which:

Figure 1 is a front elevational view of my electric water heater with certain parte and portions thereof broken away and in section to facilitate the illustration; Fig. 2 is a similar view thereof in section with the section taken through 2 2 of Fig. 3, and Fig. 3 is a sectional view thereof taken at right angles to that of Fig. 2 through 3 8 of Fig. 2.

Like characters of reference refer to similar parts and portions throughout the several views of the drawings.

The water tube Supporting members 1 and 2, tie members 3, water tubes et, heat insulating plates 5, top and bottom plates and 7, studs 8, heat insulating material 9, water conductors 10 and 11, cores 12, electric heating elements 13, insulating material 14, terminal posts 15, insulating plates 16, terminal connecting members 17, nuts 18, casing members 19 and 20, and 4electric conductors 21 and 22, constitute the principle parts and portions of my water heater structure.

The horizontal water tube supporting members 1 and 2 of my water heater are identical in construction, but positioned in reverse order, and are supported in spaced relation with each other at their ends by means of the tie members 3. Extending vertically between the members 1 and 2 are the water tubes l, extending through said members and welded or riveted over at their 2 v v ner-nose projecting-ends. These water tubes fr are preterably made oi lattened copper tubing oi' large diameter or of other material oi" high heat conouctivity, so that a very thin channel tor the passage o the water is termed. The outer Laces ot the members l and 2 are provided with channels i and L, which entend horizontally along the top and bottom sides oit the heater between the members l and 2 and the members 5, thus providing continuous water conducting means communicating with the upper and lower ends oi'l the tubes 4L- so that water may reely from the channel EZu through the tubes l to the channel l, thus providing for raiid continuous flow or water from the lower 'to the upper side oi5 the heater through the vertical thin water conducting channels or tubes 4. Positioned against the heat insulating plates are the top and bottom plates 6 and 7, which plates are also identical in construction and positioned in reverse order rrelatively-to each other. The top and bottom plates G and Y, the heat insulating plates 5 and the members l ant 2, as well as the members 3, are secured relatively to each other by means oi the studs 8 and the nuts 8a. Between the side water is provided tubes el and the tie members e heat insulating material 9. Secured in the one end of the upper plate is the water outlet conductor lO communicating with the channel l at one end; and positioned and secured in the corresponding end ot the bottom plate 7 is the water inlet conductor l1, communicating with the water conducting channel 2 in the opposite lower side of the heater, substantially as shown in F 2 of the drawings.

The electric heating` units oi' my water heater consist of electric heating elements 13 wound around a core l2 ot insulating inaterial and molded in a casing le o heat conduct-ing' and electric insulating inr'erial, preferably alundum. At the ends of the heating' elements 13 are provided the out wardly extending terminal posts lo, which extend through the molded casing le and an insulating plate l5, one ot which is positioned at the iront and another at the baci; side of the heater. The terminal posts l5 of each unit are connected with the corresponding posts ot the adjacent and separately positioned heating elements by means of the connecting members 17 and the nuts 18, as illustrated in the drawings.

The water heater is preferably enclosed by means of a sectional casing consisting of the members 19 and 20. To tlie,ii'ont side of the casing member 19 entend the conductors 2l and 99 which conductors nn, are

preferably connected with the heating unit positioned at the opposite side of the heater.

It is obvious 'from this construction,A as

illustrated in the drawings and disclosed in the foregoing speciiication, that there is provided an clectic water heater as aimed at and set forth in the objects of the invention, and though l have shown and described a particular construction, combination and arranrfement oi" parts and portions, l do t wish to be limited to this particular con- 'iOc struction, combination and arrangement, but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth iu l p ded claims.

ving thus described my invention, what f and desire to secure by Let- 2. in electric water heater, including spaced apart horizontal supporting members, a plurality of flattened vertical water tubes extending between and through said suppoiting` members, other members positioned on the outer sides ot said supporting members, there icing provided continuous hollow portions bet veen said supporting members and .aid other members for connecting the ends ot' all ot said water tubes with each other, and inlet and outlet water conductors secured to said other members and communicating with said hollow portions between said other members and said supporting members.

3. in electric water heater, including spaced apart horizontal supporting mema piui f ci' flattened vertical water extending between and through said i nembers, other members posined i the outer sides ont said supportig members, there being provided continuous hollow portions between said supportg member. and said other members for connecting the ends all oi" said water tubes with cach other, and electric heating units positioned ont and between adjacent rate tubes.

An electric water heater, including oaeed apart horizontal supporting memoers. a pluralit7 ot lattened vertical water ertending between and through said t supgliorting members, other members posi-V nlp,

other, and electric heating units positioned adjacent and between adjacent water tubes, said heating units being removably positioned between and adjacent said water tubes and electrically connected in series with each other.

5. An electric water heater, including spaced apart horizontal supporting members, a plurality of flattened vertical water f tubes extending between and through said supporting members, other members positioned on the outer sides of said supporting members, there being provided hollow continuous portions between said supporting and said othermembers for connecting the ends oi' all of said water tubes with each other, electric heating units positioned adjacent and between adjacent water tubes, said heating' units being removably positioned between and adjacent said water tubes and electrically connected in series with earch other, and casing members enclosing said supporting and other members `and said water tubes and heating units.

5. An electric water heater, including a frame, and a plurality of flattened vertical water tubes of a material of high heat conductivity positioned between and secured through opposite portions of said frame, there being provided long continuous horizontal water conducting channels at the outer portions oi' .said trame supporting said tubes for connecting the adjacent ends of all of said water tubes, whereby water will pass to all of said tubes in unison.

7, An electric water heater, including a casing with an inlet and an outlet, a plural ty of vertical bodies of heat conducting and electric insulating material mounted therein, a plurality ot' thin metallic water channel means in which the material of said means on its opposite sides is equal the thickness ol' the film of water passing therethrough mounted longitudinally in said heat conducting and electric insulating material, and electric heating elements mounted in said material on opposite sides of said water channel means.

In testimony whereof, I have hereunto set my hand at San Diego, California, this 4th day of February, 1924.

SAMUEL D. NESMITH. 

